Keyboard won't light up on a Sony Vaio VPCF121FX

Question

I've been using my Vaio VPCF121FX for over a year now, running Ubuntu 10.10 and then 11.04 and my backlight keyboard has always worked flawlessly. Until now, I just install Ubuntu 11.10 and this feature seems to be missing or forgotten by the developers.

Truth be told, I'm a late-at-night kinda typer so this is something I do use a lot in my day-to-day (or should I say nigth-to-night) laptop environment.

Does anyone know how to fix it?

I summed up the suggestions for 12.04 here: http://askubuntu.com/questions/171384/keyboard-backlighting-not-working-on-a-vaio-laptop/171401#171401 — Savvas Radevic, Aug 03 '12 at 04:35

score 4 · Accepted Answer · answered Oct 18 '11 at 08:33

4

Until a fix is released, enter this in a terminal:

echo 1 | sudo tee /sys/devices/platform/sony-laptop/kbd_backlight

answered Oct 18 '11 at 08:33

EboMike

468

and how to turn it off back??? – Feb 19 '12 at 11:15
echo 0 instead of echo 1, I would suppose. – EboMike Feb 27 '12 at 05:48

score 2 · Answer 2 · answered Nov 08 '11 at 03:39

2

Developing on EboMike's answer: you might want to update /etc/rc.local, adding the line

echo 1 | tee /sys/devices/platform/sony-laptop/kbd_backlight

just before exit 0 line. This way it is automatically executed when one reboots.

answered Nov 08 '11 at 03:39

noname

21

Keyboard won't light up on a Sony Vaio VPCF121FX

2 Answers2

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